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Local spectroscopy of edge channels in the quantum Hall regime with local probe techniques

Ihn, Thomas, Rychen, J., Vancura, T., Ensslin, Klaus, Wegscheider, Werner and Bichler, Max (2002) Local spectroscopy of edge channels in the quantum Hall regime with local probe techniques. Physica E Low-dimensional Systems and Nanostructures 13 (2-4), pp. 671-674.

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We present measurements of the tunnelling conductance between edge channels in the quantum Hall regime. By using a local potential perturbation induced by the tip of a scanning force microscope we are able to enhance the tunnelling coupling and map its strength along the edge of the two-dimensional electron gas. It is suggested that the presented method is promising for the local investigation of inter-edge-channel scattering and edge-channel equilibration.

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Item type:Article
Date:March 2002
Institutions:Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
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Keywords:Quantum Hall effect; Edge channels; Scanning probe techniques
Dewey Decimal Classification:500 Science > 530 Physics
Created at the University of Regensburg:Unknown
Item ID:11313
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